Malicious PDF — malware analysis report

Static analysis result for SHA-256 241c4fcc1a08bb6b…

MALICIOUS

PDF

86.0 KB Created: 2021-03-19 04:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 299b037e9a8e368f8201f28a9cf0524c SHA-1: e8ec6db67d3989b0a70f887dea9b376d43c4f2e0 SHA-256: 241c4fcc1a08bb6be7c8d2dc1f66a3daea1d49fd30ec5c0335b611402d7d5a18
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a PDF link farm and a critical ClamAV detection. The document contains numerous external URIs, with a prominent one being 'https://jottigo.ru/wix?keyword=betrayal+guide+3.11'. The presence of a large number of external links suggests an attempt to direct users to potentially malicious websites, possibly for phishing or to download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/wix?keyword=betrayal+guide+3.11
    • http://mejuzuw.scienceontheweb.net/rowapewazijerozevezel.pdf
    • https://cdn.sqhk.co/zuxosutuku/gnjefDj/vopepinibigoxasewor.pdf
    • http://letabumo.getenjoyment.net/biryani_recipe_in_tamil_download.pdf
    • http://zagavexakagin.mypressonline.com/3x3_basketball_score_sheet.pdf
    • http://domotoj.sportsontheweb.net/somewijedezarogetimiluj.pdf
    • https://cdn.sqhk.co/xufatirumina/g9vhdFO/princess_subway_runner_game.pdf
    • http://mapotilij.mygamesonline.org/add_2_monster_manual.pdf
    • https://cdn.sqhk.co/revidifok/ukge3jc/chase_marriott_rewards_card_guide_to_benefits.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pujumek.myartsonline.com/fexosunazerudevil.pdf
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_9bb8263463a54ae6b90ed3e26398487f.pdf?index=true
    • http://fogovulosuzan.onlinewebshop.net/gixoxetitapoxa.pdf
    • https://s3.amazonaws.com/gekojulog/a_i_r_t_full_form.pdf
    • http://luxupuxud.myartsonline.com/gowesujativunoguwek.pdf
    • https://s3.amazonaws.com/sorogamat/xuzuniserefunefitador.pdf
    • https://s3.amazonaws.com/jemisajoda/carry_on_jatta_2_official_trailer.pdf
    • https://s3.amazonaws.com/resisuna/1856426427.pdf
    • https://s3.amazonaws.com/sosupejuxofedo/89728205483.pdf
    • https://6184de0c-c318-42a7-882e-c5ddc63b817d.filesusr.com/ugd/1c8c1e_b1531a90a8414859880afa9537ef6a18.pdf?index=true
    • https://s3.amazonaws.com/towakog/74450138506.pdf
    • http://vumamuv.myartsonline.com/mikozazewev.pdf
    • https://s3.amazonaws.com/dutimajizowa/malcolm_x_speeches_audio_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113a1.bin
0cf68147cc5174a4e540e3bfee9fdcb188aec7a294a36b894284aab7a92f18c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113A1 5212 bytes
font_01_sfnt_off0001257b.bin
4b8d5b09a4f059b7d08bf282a54d6a48c7a50234adf68849bed3b6607ad86f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1257B 11132 bytes

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